Aurora Cannabis Inc. $ACB has been recovering in September after a slide from around $10.20 to a low around $5.50. However, as price tagged $6.50 ACB was testing key resistance. Furthermore, underwhelming earnings did not help ACB push through the resistance, instead pulling it back towards the August/September low.Here's a quick summary from MarketWatch:"The Edmonton, Alberta-based Aurora ACB, announced a fiscal fourth-quarter net loss of C$2.26 million on net revenue of C$98.94 million, with an adjusted Ebitda loss of C$11.7 million ($8.9 million). In a separate filing, Aurora said that its net loss attributable to common shareholders was less than $200,000, and less than a penny a share.Analysts surveyed by FactSet had estimated adjusted losses of C$0.06 a share on revenue of C$108 million. Last year in the same quarter, Aurora reported net income of C$79.9 million, or 17 cents a share, on net revenue of C$19.1 million. Aurora shares declined about 9% in after-hours trading following the results." (MarketWatch.com)ACB Daily Chart(click to enlarge)Resistance:- The $6.50 area was challenged by a falling resistance.- Furthermore, if the market remained bearish, the RSI would likely remain under 60. This week, the RSI was challenging 60.- The earnings report didn't help. - The key is the $5.50 area again. If this area holds despite the disappointing earnings, then we can expect some upside towards $7.00 in late 2019 or early 2020. However, a break below $5.50 opens up the $4.00-$4.10 2018-low.- Note that this $4-$4.10 area will be supported by the 200-week simple moving average (SMA). - Personally, I have no exposure in ACB, but wouldn't mind adding a small position, 1% of portfolio around $4.10. ACB Weekly Chart(click to enlarge)